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PERMITTEE NAME/ADDRESS (include Facdrty Name/Location if Different) NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434 -0535 FACILITY: SANBORN CRK & ELK CRK MINES LOCATION: 3737 HIGHWAY 133 SOMERSET, CO 81434 ATTN. Mike Ludlow Exec VP NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00000132 009 -A ERMI BER DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MMlDD/YYYY 02101/2014 02/28/2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SURF RUNOFF TO N FK GUNIS RIVR External Outfall No Discharge NAME/11TLE PRINCIPAL EXECUTIVE OFFICER I "" under penalty of law that Mrs document and all attachments rare prepared under my direction or A supe —on in a —dance rM a system designed to assure that qualAktl personnel properly gather and // - ( , „ f [ r TELEPHONE DATE aluate the information submitted Based on my inquiry of the person or persons rho a the ,/t� e �/ //,r �/ �/ i system or tlose persons directly responsible for gathering the information the mformalton submitted s, , , v to the beat of my Knowledge and behet true accurate and complete I am aware that there are Y' sgnRiwm pena8ies for submaong false mformaton -Awing the possibility of fine and imprsonment for j SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR nowrg v.Wona AUTHORIZED AGENT TYPED OR PRINTED aaEacoae NUMBER MMIDONM COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <= 10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1,PP 4 -5, AND IA.2, P. 5 FOR ROMNTS.TDS MONITORING -SEE PART VIA.2.G OF RATIONALE. 30 DAY AVG. IF HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. i 10/17/2013 Page 1 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE ~"*` 'r. "' •" ~ *"•" MEASUREMENT 0040010 PERMIT ~~~ * * * ~' '"""`* 6.5 '**"' 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE * ~ ~* *' **~ "** ~* •*•''* MEASUREMENT 0053010 PERMIT ~' *" " ~'~ ~'*** *"*" 35 70 mg /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE *"` "» *""» **`**' •****' MEASUREMENT 0054510 PERMIT ~ ~'* "*~' ~* ~» •*' *• Req. Mon. Req. Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE MEASUREMENT 0104510 PERMIT ~ * *~ * ~ ~* '*""' ****" 3500 7000 ug /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE ' ~ »~ * ~*`* **'~' '*'*•' ****~ MEASUREMENT 0358210 PERMIT ' ~ ~* * ~*** '~~' ~•*'* ' ~'~ 10 mg /L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment plat SAMPLE •****` **~~ * ***'* • * ~ ** MEASUREMENT 500501 0 PERMIT Req. Mon. Req. Mon. MGD ' *'*'* "*'~ *•• "' "`*~' Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease visual SAMPLE MEASUREMENT 840661 0 PERMIT * ~"* Req. Mon. Y =1;N =0 ""**' "**»" "*"* ' ~ ~» Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAME/11TLE PRINCIPAL EXECUTIVE OFFICER I "" under penalty of law that Mrs document and all attachments rare prepared under my direction or A supe —on in a —dance rM a system designed to assure that qualAktl personnel properly gather and // - ( , „ f [ r TELEPHONE DATE aluate the information submitted Based on my inquiry of the person or persons rho a the ,/t� e �/ //,r �/ �/ i system or tlose persons directly responsible for gathering the information the mformalton submitted s, , , v to the beat of my Knowledge and behet true accurate and complete I am aware that there are Y' sgnRiwm pena8ies for submaong false mformaton -Awing the possibility of fine and imprsonment for j SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR nowrg v.Wona AUTHORIZED AGENT TYPED OR PRINTED aaEacoae NUMBER MMIDONM COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <= 10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1,PP 4 -5, AND IA.2, P. 5 FOR ROMNTS.TDS MONITORING -SEE PART VIA.2.G OF RATIONALE. 30 DAY AVG. IF HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. i 10/17/2013 Page 1